Questions tagged [a4988]

The A4988 is a complete microstepping motor driver with built-in translator for easy operation. It is designed to operate bipolar stepper motors in full-, half-, quarter-, eighth-, and sixteenth-step modes, with an output drive capacity of up to 35 V and ±2 A. The A4988 includes a fixed off-time current regulator which has the ability to operate in Slow or Mixed decay modes.

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CNC Shield V4+ Arduino Nano+ HC06 [closed]

Is CNC V4 supplying 5V to the Arduino Nano? I don't need the USB because I'm using HC-06 to control one motor. If I use just one 12V PSU it will power the Nano as well?
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Stepper motor only rotates once in a loop?

I am quite new to this , I am trying to program two motors , aStepper and bStepper. I want the program to rotate aStepper then rotate the bStepper and when that is done rotate aStepper again , and ...
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Motor keeps spinning crazily after UNO board reset

I'm using a NEMA 17 stepper motor with A4988 motor driver and Arduino Uno board. I have used full microstepping (1/16th, so one revolution = 3200 steps). I'm coming across this strange problem. ...
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Powering two stepper motors with A4988 drivers

New to this site and wanted advice and sanity checking on my project design. I know there are similar questions to this but I couldn’t find one that was closely similar to mine. I’m creating a device ...
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91 views

Are my stepper motors being burnt out? What is the issue here?

I am building a mini-cnc laser engraver as shown in this intructable and this youtube video. I have built the circuit (minus the jst connector and two male pins at the top left of the board) and have ...
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How can I pulse a stepper motor whilst also wanting to handle other tasks?

A Polulo A4988 driver board listens for a LOW -> HIGH pulse on a digital pin to step a stepper motor. A simple way to pulse this with a delay of say 100μs, is to use the delayMicroseconds function:...
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How to connect a MPU-6050 to an Arduino that already has a CNC Shield V3 on top of it?

I have a CNC Shield on top of an Arduino Uno (GRBL pinout) that controls 2 stepper motors through a4988 drivers and it is working like a charm. Now I want to add an accelerometer to it. From my ...
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557 views

Running two NEMA 17 motors, one by one, using the Arduino Uno

I am new to Arduino. I am trying to run two stepper motors NEMA 17 through respective A4988 driver and controlling via Arduino Uno. The thought is that first stepper motor will carry out a first ...
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A4988 Vref too low

I'm driving a stepper rated at 5V/1.7A using an A4988-based driver circuit with a 12V power supply. An Arduino controls the stepping sequence. According to the datasheet for my A4988, I should be ...
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Run Stepper with A4988 driver in highest resolution

I have a Bipolar Stepper Motor (12V, 350mA, 28oz-in NEMA-17) and would like to run it in the highest resolution (Sixteenth Step) with the A4988 Driver. According to multiple sources I read I need to "...
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442 views

Do I really need Ramps 1.4 for laser engraver

I'm making 2-axis laser engraver like system. Arduino waits command from pc, on receive moves laser to next coordinate and send current coordinate to pc. I have 3 step motors and I'm controlling them ...
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Stepper motor jittering

I'm trying to make a nema17 stepper motor work using ramps1.4 and A4988 driver. But when I'm trying to rotate motor, it spins with almost no torque and constant shaking. Motor 2-phase nema17 , Step ...